Compound sheet material for manufacturing golf-balls or other articles.



N'o. '168,12 PATLNTLD AUG; 23, 1904.- l L. KEMPSHALL. GUMPUUNUSHEET MATERIAL TOR MANUFACTURING GULF BALLS` 0R OTHER ARTICLES.

APTLTUATION FILED mno. 1s. 1901A No. 'IceQ-12e Patented 'August 23, 1904.

` LAZER KEMPSHAL OF BOSTON, lM,ASSAOHITSETTS, A S'STGNOR lTO MANHATTAN MANUFAcTURTNG-OOMPANY, or PORTLAND, MAINE,

, A lCORPORATION OFMAINE l l lcoMPouNb SHEET `MATER|AL FOR MANUFACTURING GoLF-BALLs oR OTHER ARTICLES. sPEc-IFIATION forming part'r Letteramtent No. 7es`,129, datedv-Agiust 23,1904, Application filed December 16I 1901. Serial No. 86,904.' (No specimens.) I

vTo r11/,ZZ whom t concern:

lBe it known that I, ELEAZER I {uMrsrrALn a citizen of the United States, residlng 1n Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Compound Sheet Material for Manufacturing Golf-Balls orl other Articles, of which the'follo-wing is a specifica- BOII. f v

The object of my present invention is to provide an improved compound or composite material in the form of sheets of substances adapted to be manufactured in part of Isubstances of the celluloidljor pyralin class.

- part of this specification,

of the manner in forming a Figure 1 is illustrative'of the preferred manner of carrying out the manufacture of my improved compound sheet material. manner in which the material may be treated for compacting and uniting` together the component members or portions thereof. Fig. 3

2, fur- Figa 4 is an 'In the accompanying drawings,

enlarged and diagrammatic View which the intermediate sheet (designated in a general way by 3) may-be combined with celluloid substance in a plastic form, and Fig. 5 shows a portion of the completed material broken away for illustrative Similar characters refer tov like parts in all the figures.- In carrying out my present invention Iapply a brous material in sheet form, preferably a Woven fabric, to one or more sheets of Celluloid or like substance -previouslysuitably application thereto of the rous sheet or layer and then combine the layers permanently togetherby the applicaprepared for the tion of a relatively high degree of pressure and heatsimultaneously applied t'o firmly unite and incorporate the sheets and layers in such v ings of golf-balls and other articles which are required to have atough and durable charac- Fig. 2 illustrates the illustrative lter and at the same time provide for a smooth lexterior finish of the article or articles.

In Fig. 2 the sheets 2,. 3, and 4 arev shown assembled upon each other between a pair of pressing and heating dies or plates, (designated by-5and-6.) respectively, which plates may have perforations, as 7, for .the passage of heating and cooling iiuids, these to be applied after the usual manner of heating and cooling forming-dies in the manufacture of rubber l and celluloid articles,

In Fig. 3 said dies 5 and 6 are shown brought firmly together, thus compacting and'uniting,

the several. sheets between -`such dies into one moldable sheet,

Flg. 5.

a greatly-enlarged fragmentaryportion thereof shown embedded in a relatively large quantity of celluloid material, as 8, which, inthe preferred form of my` improvement in the manufacture of moldablel sheet materials will usually havea relatively plastic character as compared with the prelimi'narily prepared sheet or sheets 2 and 4. one of the sheets 2 and llwill be employed.

(designated in a general way A by S,) which sheet is' further represented in In some cases only'.

`When the brous component of the sheet 3 is a Woven fabric, the strands of this-fabric willl usually cross each other, those running in'one direction being indicated in"`Fig. 3 by 9'and those running in theother direction by-9'. This fabric sheet will usuallybe suliiciently open in the meshes thereof to permit the celluloid substance to pass through the same when subjected to proper treatment.

When the compound material is to be made vide the celluloid substance in the form of sheets of suitable thickness,

of a relatively considerable thickness. I profrom as a preparatorystep in the manufacpart of the solventoriginally existing in such material. The said sheets (designated by 2 and preferably 'the material in said sheets haseliminated thereture of my present improvement the larger and 4:) may therefore be considered as parr i tially seasoned or in a somewhat G C green condltion.

' 'Iheintermediate 'sheet ,3, composed chiefly of the fibrous substance or fabric, is best prepared for use by incorporating therewith a relatively small quantity of celluloid or pyralin substance, which is in a plastic or semiplastic condition, it usually being desirable that this particular sheet of the series of sheets comprising the entire article shall have a somewhat increased amou-nt of solvent as compared with the proportionate amount contained in the other sheet or sheets, so that when the assembled preliminarily-prepared sheets are subjected to heat through pressingdiesas indicated, for instance, in Fig. 2- the extra amount of solvent contained in the said plastic sheet will act upon the contiguous portions of the sheet or sheets, and so effect a close joining together of the several components or portions of the completed material.

At the same time said treatment when applied as indicated and carried to a sufficient extent and intensity operates to further season and solidify the outer sheet or sheets 2 and 4in connection with the condensing and solidifying of the sheet 3, with the result of producing a compound sheet material or interlined stock that is particularly adapted for use in making the outer shells of golf-balls and like articles requiring a high degree of toughness and stability when subjected to wear and to blows.

The improved material by reason of its peculiar qualities is especially adapted for use in articles requiring a high degree of polish, since the toughness and stability of the material gives it a high degree of security against cracking and abrasion from such treatment as it would ordinarily receive in practical use.

My present improvement has the advantage of furnishing a sheet-form or plate-form material of such a composite construction as to secure a relatively high degree of flexibility in a finished article made therefrom and with a reduced liability 'to serious injuries from blows as when used in the outer shells of golf-balls or like articles. By reason o f the peculiar manner in which in the preferred form of manufacturing said material the several component sheets thereof are combined and united together and by reason in pari. of the varying conditions of the celluloid substance in the respective layers resulting from such preferred mode of manufacture the finished material is peculiarly adapted for being formed, without destructive effects in any part thereof, into articles of varying conformations produced by subjecting the material to the action of forming-dies of varying sizes and conformations.

When the prepared ibrous sheet 3-is applied between two sheets, such as 2 and 4, and the whole is then combined together by the heating and pressure treatment terminated before the said sheet 3 has the celluloid component thereof entirely seasoned, the resulting sheet material has in the inner part thereof a more duetile and flexible consistency relatively to the outer portions of such completed sheet, and so is peculiarly .well adapted for being formed into complex shapes by suitable die treatment, since the subjecting of such material to heat applied through die-pressure tendsto soften the inner portion of the completed sheet more than the outer portions thereof, and thus promotes a shifting ofthe different parts of the entire mass with relation to each other, thereby permitting those various portions to somewhat rearrange themselves, and thus assume a new relation or location that becomes permanent on the further seasoning and cooling of the formed article.

Having thus described my invention, l claim4 1. As an improvement in moldable sheet materials of the celluloid or pyralin class, a plurality of sheets of such substance free of the principal part of solvent originally existing therein, and an intermediate sheet consisting of a fabric incorporated with such substance having a larger proportion of solvent, and the whole being combinedl into a single moldable sheet through subjection to heat and pressure.

2. As an article of manufacture, a moldable sheet material consisting of two sheets of' celluloid substance, and an intermediate sheet consisting of a woven fabric incorporated with a more plastic celluloid substance, the whole being so treated by heat and pressure as to form a compact sheet xnoldable into new forms when again subjected to heat and pressure.

3. As an article of manufacture, a composite material consisting of outer sheets of the celluloid or pyralin class between which, when the same are in a condition intermediate their green condition and the condition which they ultimately assume when fully cured,therc is compressed by the aid of heat and pressure a sheet of fabric. I j.

4. As an article of manufacture, a sheet of fabric embedded in the contiguous surfaces of super-posed layers of partially -cured or u. 7,

green sheets of celluloid or like material.

ELEAZER KEMPSHALL.

Titnessesz Fam). J. Donn, II. M. HANKS.

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